| accident |
unknown or unplanned causes of events; chance. [1/3 definitions] |
| algebra |
a form of elementary mathematics, used esp. in solving equations, in which letters stand for unknown or variable quantities. [1/2 definitions] |
| anonymous |
of unknown identity, as an author or donor. [2 definitions] |
| apocrypha |
any of various religious writings of unknown origin and questionable authenticity. (Cf. canon1.) [1/2 definitions] |
| bud2 |
(informal) used to address a male, usu. one whose name is unknown and sometimes in a condescending or hostile tone. |
| buddy |
used to address a male, usu. one whose name is unknown. [1/2 definitions] |
| dark horse |
an unknown contestant or one who unexpectedly wins a race, esp. a horse race. [1/2 definitions] |
| dingus |
(informal) an object whose name is forgotten or unknown; thingamajig. |
| discover |
to find or see (something unknown) before anyone else. [1/3 definitions] |
| Emily Dickinson |
major U.S. poet who remained largely unpublished and unknown during her lifetime (b.1830--d.1886). |
| equivocal |
of unknown or uncertain significance or classification. [1/3 definitions] |
| experiment |
a test or trial to discover something unknown, esp. a scientific one to test a hypothesis. [1/3 definitions] |
| exploration |
the act of exploring previously unknown areas. [1/2 definitions] |
| half-blood |
among animals, the offspring of one pedigreed parent and one of mixed or unknown ancestry. [1/3 definitions] |
| Hebrews |
a book of the New Testament, consisting of a letter, by an unknown author, addressing Jews who had become Christians or Palestinian Jews. |
| idiopathic |
of a disease or the like, having an unknown cause. |
| idiopathy |
an ailment of unknown cause or not caused by any other disease; primary disease. |
| indeterminate |
of a mathematical equation, not limited to one value for each unknown. [1/3 definitions] |
| Jane Doe |
the name used in legal proceedings to indicate a fictitious or unknown woman. |
| John Doe |
the name used in legal proceedings to indicate a fictitious or unknown man. |
| joker |
a concealed, unnoticed, or unknown fact, stipulation in a document, or the like that eventually has a major effect or causes a major unexpected change. [1/4 definitions] |